{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["message topic", "entity origin", "product producer", "instrument agency"], "input": "in 1882 louis developed a method of making photographic plates , and by 1894 the brothers ' factory was producing 15 million plates a year ."}
{"message topic": [], "entity origin": [], "product producer": [{"subject": "factory", "object": "plates"}], "instrument agency": []}